A pilgrimage is a trip to a place that was made holy by a special event, or because it held a magical object, or both. People have been making pilgrimages for tens of thousands of years, and one of the most famous is the road to Santiago across Northern Spain. It is like walking through a continuous museum. You cross two-thousand-year-old bridges that were built by the Romans. You sit down to lunch in the reconstruction of a five-thousand-year-old Iron Age hut. You are in constant contact with the great art and architecture of the Middle Ages. Burt Wolf walks the sacred road, looks at the legend of Santiago, and discovers why, even in modern times, over 200,000 people make the trip every year.